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Model: N07 Internal Ratchet Coupling
(Voigt/Reuleaux)
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Model Metadata
Taxonomy:
Voigt
Group:
Ratchet Mechanisms
ID:
N07
Title (English):
Internal Ratchet Coupling
Title (German):
Sperrung von Wilbers
Creator:
Franz Reuleaux
Date Created:
1882-00-00
Manufacturer:
Gustav Voigt Werkstatt
Size:
Base: Width x Depth [270,142]mm; Overall: W x D x Height [322,142,195]mm
Medium:
cast iron and brass on wood pedestal
Rights:
For educational use only. All rights reserved by the contributor(s) and publisher(s).
Audience:
General public
Keywords:
ratchet
Description:
Ratchet mechanisms are like electric diodes, permitting motion in one direction but not the other. In this ratchet mechanism, the rotary motion about two coupled axes are enabled for relative motion in one direction, but the clutch slips for relative motion in the other direction. Reuleaux attributes the design of this particular mechanism to a person named Wilbers who used it in a lawn mower machine. Unlike N-1 where the pawls ride on the outside diameter of the saw-toothed wheel, in N-9 the three pawls engage the teeth on the inside diameter of the circular ring. Reuleaux was intrigued with the kinematics of ratchet gearing and wrote at considerable length about them in his two major works (see References). Leonardo da Vinci also sketched many ratchet mechanisms. See e.g. The Codex Madrid I drawings on line.
Descr Author:
Francis Moon
Descr Date:
2004-07-00
Image Metadata
Title:
N07. Internal Ratchet Coupling
Rights:
Jon Reis/www.jonreis.com. Jon Reis Photography grants Cornell University Libraries, and the Cornell College of Engineering the rights to display copyrighted images of the Reuleaux Collection of Kinematic Mechanisms on the Cornell University and National Science Digital Library web sites and for unlimited use in Cornell University Library publications for education purposes only. Rights for all other uses such as editorial, advertising, web use and display by third parties not affiliated with Cornell University are reserved by the photographer.
Descr:
Date Created:
2005-01-19 11:02:16
URL:
http://kmoddl.library.cornell.edu/stillImages/small/N07.jpg
Size (w x h):
384 x 256

Related Resources
References